What Does Exodus 10:2 Mean?

"And that you may tell in the hearing of your son and of your grandson how I have dealt harshly with the Egyptians and what signs I have done among them, that you may know that I am the LORD." Verse 2 provides the intergenerational purpose of the plague sequence: Moses and Israel are to tell their children and grandchildren what YHWH did to Egypt.

The sign-demonstration is not only for the generation that witnesses it; it is designed to be transmitted through family storytelling across generations. The Passover liturgy (Exodus 12:26-27; 13:8, 14) institutionalizes exactly this: the child's question and the parent's answer that rehearses the Exodus events as the foundation of Israel's identity.

The phrase "how I have dealt harshly" (Hebrew: hitallalti, hithpael of alal, to deal severely/trifle with) is the theological characterization of the plague sequence from YHWH's perspective: he has "dealt harshly" with Egypt: acted against Egypt in a sustained, complete way. The harshness is not incidental; it is the designed intensity of the demonstration. The intergenerational transmission of this demonstration, father to son to grandson, is the mechanism by which the Exodus becomes the foundational event of Israel's theological identity.

The knowledge-purpose "that you may know that I am the LORD" in verse 2 is addressed to Israel (not Pharaoh, as in most plague knowledge-purposes). The plague sequence serves a double epistemological purpose: Pharaoh should know YHWH's incomparability; Israel should know that "I am the LORD." The Exodus is the foundational event of Israel's covenant knowledge: the event that defines YHWH's identity for his people as the God who acts in history to rescue and the God who judges those who oppose him.